PWM Controller Simulation - Thermistor add-on

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Published on September 15, 2009 12:00:00 AM ● Video Link: https://www.youtube.com/watch?v=boiDKHd2u3k

Duration: 0:30

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Thermistor amplifier for fan controller, with range from 77°F (full off) to 110°F (full on).\nThe output must be routed to the INVERTING input of the PWM comparator (see previous video) and the triangle wave to NON-INVERTING to work correctly.\nNetlist for Falstad simulator (http://www.falstad.com/circuit/):\n$ 1 5.0E-6 10.20027730826997 62 12.0 50\nR 336 112 336 64 0 0 40.0 12.0 0.0 0.0 0.5\n174 336 112 368 176 0 10000.0 0.30200000000000005 Calibration\n174 192 224 160 320 0 10000.0 0.5396000000000001 Thermistor\nw 368 144 384 144 0\nw 384 144 384 112 0\nw 384 112 336 112 0\nr 336 176 336 224 0 1000.0\nr 192 320 192 368 0 1000.0\ng 192 368 192 400 0\nw 336 224 192 224 0\nw 160 272 144 272 0\nw 144 272 144 224 0\nw 144 224 192 224 0\na 336 240 480 240 1 12.0 -0.0\nx 348 237 378 240 0 10 3,5,10\nx 387 244 420 247 0 10 LM324\nx 352 269 376 272 0 10 2,6,9\nx 251 387 364 390 0 12 from voltage follower\nx 434 255 458 258 0 10 1,7,8\nr 304 368 304 320 0 3900.0\nr 304 320 480 320 0 22000.0\nx 240 129 329 132 0 10 calibrate to 6.98kΩ\nx 50 305 170 308 0 10 measuring range: 5-10kΩ\nx 55 316 171 319 0 10 (25°-43° C or 77°-110° F)\nR 304 368 256 368 0 0 40.0 6.0 0.0 0.0 0.5\nw 304 320 304 256 0\nw 304 256 336 256 0\nw 480 320 480 240 2\nw 480 240 592 240 0\nx 442 233 594 236 0 10 to PWM (12V is off, 0V is full on)\nx 47 295 178 298 0 10 thermistor NC20K00103JBA\no 28 64 0 35 1.52587890625E-4 9.765625E-5 0 -1